Guide means for adjustable hydraulic press



May 28, 1963 w. v; HOLL ETAL GUIDE MEANS FOR ADJUSTABLE HYDRAULIC PRESS3 Sheets-Sheet 1 Filed July 31, 1959 Walter Hall Joseph J Mair/sonINVENTORS Q BY E way 19m May 28, 1963 w. v. HOLL ETAL 3,091,147

GUIDE MEANS FOR ADJUSTABLE HYDRAULIC PRESS Filed July 31, 1959 3Sheets-Sheet 2 3 Fig. 2 //00 /0O V V fig g/ I A m m u Walter V. Hol/Joseph J. Morrison INVENTORS M40612 BY fg W am May 28, 1963 Filed July31, 1959 w. v. HOLL ETAL 3,091,147

GUIDE MEANS FOR ADJUSTABLE HYDRAULIC PRESS 3 Sheets-Sheet 5 F ig. 4

Walter 1 Hall Joseph J Morr/Zson INVENTORS s,0s1,147 GUIDE ll IEANS FORADJUSSTABLE HYDRAULIC PRES Walter V. Hell, 3621 N. Hereford Lane,Philadelphia 14, 3 2., and Joseph J. Morrison, 33 King Ave., Mariton,

' Filed July 31, 1959, $91. No. 830,755

Claims. c1. 83--568) This invention relates in general to new and usefulimprovements in hydraulic presses, and more specifically to a novel diefitting press.

In large plants where thousands of a particular article are formed bypunching and trimming, there is normally provided a master die and theindividual punches are formed in accordance with the master die.Normally the punches are shaped as closely as possible to thecrosssection of the master die, after which the punches are aligned withthe master die and then forced into the master die with a broachingaction so as to finally shape the punches. The punches are thenheat-treated and hardened.

it is the primary object of this invention to provide a relatively smalldie printing press which is provided with a platen that is movable withrespect to the base thereof so as to facilitate the alignment of the twoparts being fitted together.

Another object of the invention is to provide a hydraulic die fittingpress which is of a relatively flat construction so as to facilitate theinsertion thereof in existing machinery where necessary thus renderingthe die fitting press available for such uses wherein the clearance inthe machinery is relatively small.

Still another object of the invention is to provide a die fitting presswhich includes a base having four extensible fluid motors or asufficient number as to define a plane so as to impart rectilinearmovement to a platen seated in overlying relation to the base and guidedby guides for vertical longitudinal movement, the platen being supportedby but not rigidly connected to the piston rods of the fluid motors forvertical movement and equal pressure distribution thereon, alsopermitting longitudinal adjustment of the platen with respect to thebase and the fluid motors.

A further object of the invention is to provide a die fitting presswherein the platen is not only vertically movable under the influence offluid motors, but also is longitudinally shii'table, the platen having anon-rigid sliding interlocked connection with each of the fluid motorsand being provided with a micrometer adjustment so that it may beaccurately positioned longitudinally of the supporting base.

Another object of the invention is to provide a novel die fitting presswhich includes a base carrying a plurality of extensible fluid motors, aplaten supported by the fluid motors for vertical movement, standardsextending upwardly from the base and having an auxiliary platenoverlying the main platen in spaced relation, the standards passingthrough the auxiliary platen and having enlarged heads limiting upwardmovement of the auxiliary platen, the heads of the standards furthercarrying clips which pass around the edges of the auxiliary platens toprevent downward movement thereof.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

FIGURE 1 is a perspective view of the die fitting press, which is thesubject of this invention, and shows the general details thereof;

3,091,147 Patented May 28, 1963 ice FIGURE 2 is an enlarged longitudinalsectional view taken substantially upon the plane indicated by thesection line 2-2 of FIGURE 1 and shows a specific internal constructionof the die fitting press, intermediate portions of the standards thereofbeing broken away;

FIGURE 3 is an enlarged transverse sectional view taken substantiallyupon the plane indicated by the section line 33 of FIGURE 2 and showsfurther the details of construction of the die fitting press, includingthe details of the clips which extend between the enlarged heads of thestandards and the auxiliary platen for retaining the auxiliary platen inits elevated position;

FIGURE 4 is an enlarged horizontal sectional view taken substantiallyupon the plane indicated by the section line 4-4 of FIGURE 2 and showsthe specific mounting of the platen, including the connection betweenthe platen and the micrometer adjustment screw;

FIGURE 5 is an exploded perspective view rotated from its position ofFIGURE 1 and shows the details of the connection between the micrometeradjustment screw and the platen;

FIGURE 6 is an enlarged fragmentary sectional view taken substantiallyupon the plane indicated by the section line 66 of FIGURE 4 and showsfurther the details of the micrometer adjustment screw; and

FIGURE 7 is an enlarged fragmentary vertical sectional view takensubstantially upon the plane indicated by the section line 7-7 ofFIGURE-1 and shows the details of the mounting of one of the standards.

Referring now to the drawings in detail, it will be seen that there isillustrated in FIGURE 1 a die fitting press which is the subject of thisinvention, the die fitting press being generally referred to by thenumeral 10. The die fitting press 10 includes a relatively thick base 12which is in the form of a plate. The base 12 has mounted therein fourextensible fluid motors which are arranged in a rectilinear pattern, asis best illustrated in FIGURE 4, each of the fluid motors being referredto in general by the reference numeral 14. It will of course be apparentto those skilled in the art, that the actual number of fluid motors isnot critical in general, as long as the number exceeds three, the numbernecessary to impart rectilinear movement to the platen supportedthereon.

Each of the fluid motors includes a two-piece cylinder assemblyincluding an upper cylinder part 16 and a lower cylinder part 18. Thecylinder parts 16 and 18 are releasably connected together by a threadedconnection 20 and are sealed together by a compressed O-ring 22. Theupper cylinder part 16 is provided at the upper end thereof with aperipheral flange 24 which overlies a portion of the base 12 and issealed relative thereto by a compressed O-ring 26. It is to be notedthat when the cylinder parts 16 and 18 are connected together, theyclamp 21 relative portion of the base therebetween to thus firmly anchorthe cylinder in the base 12.

The individual fluid motor 14 also includes a piston 28 which is sealedrelative to the cylinder part 16 by an O-ring 30. The cylinder part 16has a reduced upper bore 32 through which an enlarged piston pin 34passes. The piston pin 34-, because of its size, if desired, may beintegrally formed with the piston 28. The piston pin 34 is sealed withrespect to the cylinder part 16 by means of an O-ring 36.

It is intended that all of the fluid motors 14 act simultaneously. Inview of this, there is provided a single hydraulic source for the fourfluid motors 14. This hydraulic source includes a hydraulic line 38connected to a suitable pump (not shown). The hydraulic line 33 isconnected to the base :12 by a fitting 4% (FIGURE 2) which is threadedlyengaged into a longitudinal bore 42. The bore 42 extends through acentral part of the base 12 intermediate the fluid motors 14, as is bestshown in FIGURE 4. A pair of transverse bores 44 are formed through thecylinder part 16 and the base 12, as is best shown in FIGURES 3 and 4,so as. to communicate the individual fluid motors 14 with the fluidpassage 42. The bores 44 do not extend entirely through the base 12,there being no necessity for this. The outer part of each bore 44 isplugged by plug 46.

A platen 48 overlies the base 12, and is of a smaller dimension thanbase 12.. As best shown in FIGURE 5, the platen 48 is provided on theunderside thereof with a pair of longitudinally extending T-slots 50.The upper ends of the piston rods 34, as best shown in FIGURE 3, areprovided with T-heads 52 of a size and proportion snugly fitting betweenthe longitudinal sides of the T-slots 50 for slidable adjustment. Inthis manner the platen 48 is connected to all of the piston rods 34 formovement therewith and at the same time longitudinal sliding movement ofthe platen 48 with respect to the fluid motors 14 and the base 12 ispermitted.

A pair of longitudinally extending guide bars 54 are secured to theupper surface of the base d2 along the longitudinal edges thereof. Theguide bars 54 are aligned with respect to the base 12 by aligning pins56 and are secured in place thereon by cap screws 58.

Another bar 6% extends transversely of the base between the guide bars54 at one end of the base 12. The bar 61} is aligned with the base 12 bymeans of aligning pins 62'and is removably secured to the base 12 bymeans of cap screw 64.

The transverse bar 60 is provided with an internally threaded bore 66 asseen in FIG. 6 which has fine threads formed therein. A micrometeradjustment screw 63 is threadedly engaged in the bore 66. The micrometeradjusting screw 68 is provided with an enlarged hand wheel 7% andfacilitates the positioning of the micrometer adjustment screws 63. Thehand wheel 70, as is best shown in FIGURE 1, is provided with numericalindicia 72 to facilitate the positioning thereof.

Referring now to FIGURE in particular, it will be seen that one end ofthe platen 48 is provided with a vertical T-slot 74. A T-shaped fitting76 is positioned within the T-slot 74 for relative sliding movement. Asis best shown in FIGURE 6, the T-shaped fitting 76 is provide-d with abore 78 therethrough which opens in the rear part thereof into anenlarged bore 80. A fastener 82 having an enlarged head extends throughthe fitting 76 and 'is threaded into one end of the micrometeradjustment screws 68, asat 84. It is to be understood that the fastener82 is rotatable within the fitting 76 and at the same time connects thefitting 76 to the micrometer ad justment screw 68 without the existenceof play. Certainly, there is no play between the fitting 76 and theplaten 48 even though the platen 48 may move vertical with respect tothe fitting 76. In this manner the micrometer adjustment screw 63 isconnected to the platen 48 to shift the platen 48 longitudinally of thebase 12 while permitting the platen 48 to be vertically adjusted by thefluid motors 14. A pair of standards 86 extends upwardly along the sidesof each side of the base 12. Each of the standards 86 is generallyrectangular in cross-section and is of a size to assume the necessaryload. As best illustrated in FIGURE 7, a bushing 88 is seated in thelower part of the base 12 and is interlocked with its respectivestandard 86 to prevent rotation thereof. The lower part of the standard86 is clamped in place by a bolt 90 which extends through the standard86, the bushing 88 is threadedly engaged in a bore 92 in the base 12. AWasher 94 is carried by the fastener 90 and bears against the stand-:ard 86.

An auxiliary platen 96 overlies the base 12. The auxiliary platen isprovided at the upper end thereof with a plurality of openings throughwhich the standards 86 pass. Each of the standards 86 is provided withan enlarged head 98 which overlies the auxiliary platen 96 and preventsupward movement thereof;

Reference is now made to FIGURE 3 wherein the details of a platensupporting clip ltltl are illustrated. The upward movement of theauxiliary platen $6 is limited by the heads 98. However, the platen 6has a tendency to move downwardly. This is prevented by clips 1% whichare carried by the heads )8 of the standards 36. Each of the clipsincludes a socket portion 192 which is engaged over a respective one ofthe standard heads 98, and a generally channel-shaped clip portion iii-4which extends about an edge of the auxiliary platen 96. The clips 1% maybe merely slid sideways to remove them from engagement with the standardheads 98.

The platen 4-8 is provided with a plurality of internally threaded bores1&6. The bores 196 may be of any pattern desired for clamping workpiecesthereto. Similarly, the

auxiliary platen 96 is provided with a plurality of internally threadedbores 108. The bores 1538 are also for the purpose of clampingworkpieces to the auxiliary platen 96 and may be of any desired pattern.

In accordance with the present invention, a first workpiece, for examplea master die,-will be clamped to the platen 48. A second workpiece, forexample, a punch blank, will be secured to the underside of theauxiliary platen 96 by means of suitable clamps. The platen 48 is thenlongitudinally adjusted through the use of micrometer adjusting screw 68until the two parts are aligned. Then, the hydraulic pump (not shown) isactuated so as to pump hydraulic fluid into the individual fluid motors14. This will result in an evenly distributed upward pres sure movementof the platen 48 so as to force the master die over the punch and, thus,with a broaching action, shape the punch to fit the master die. This isa typical example of the use of the die fitting press and is not to beconsidered the sole use thereof. The die fitting press may equally aswell as used in the formation'of small parts and the like. -It will alsobe appreciated that the equally distributed pressure more reliablyobtainable by the present press will be a generally desirable featurethereof for all uses to which it is applied.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction and operation shown anddescribed, and accordingly all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention asclaimed.

What is claimed as new is as follows:

1. A fitting press comprising a base, guides on the upper portion ofsaid base, a platen seated between said guides and in overlying relationto said base for guided vertical and longitudinal movement with respectto the base and the guides, a micrometer adjustment screw car ried bysaid guides, means operatively connecting said adjustment screw to saidplaten for longitudinally positioning said platen and accommodatingrelative vertical movement between the guides and the platen, extensiblefluid 7 motor means in said base and underlying said platen, and meansoperatively connecting the fluid motor means to the platen for elevatingthe platen under evenly and equally applied pressure from the motormeans, said fluid motor means including a piston rod, an interlockedconnection between said platen and said piston rod locking said platento said piston rod for vertical movement therewith while permittingrelative longitudinal sliding movement of said platen with respect tothe piston rod.

2. A fitting press comprising a base, guides on the upper portion ofsaid base, a platen seated between said guides and in overlying relationto said base for guided vertical and longitudinal movement with respectto the base and the guides, a micrometer adjustment screw carried bysaid guides, means operatively connecting said adjustment screw to saidplaten for longitudinally positioning said platen and accommodatingrelative vertical movement between the guides and the platen, aplurality of extensible fluid motors in said base for impartingrectilinear movement to and underlying said platen, and slide meansoperatively connecting said fluid motors to said platen for elevatingthe platen with even and equally applied pressures, an interlockedconnection between said platen and each of said fluid motors forvertical movement therewith while permitting relative longitudinalsliding movement of said platen with respect to said fluid motors.

3. A fitting press comprising a base, guides on the upper portion ofsaid base, a platen seated between said guides and in overlying relationto said base for guided vertical and longitudinal movement with respectto the base and the guides, a micrometer adjustment screw carried bysaid guides, means operatively connecting said adjustment screw to saidplaten for longitudinally positioning said platen and accommodatingrelative vertical movement between the guides and the platen, extensiblefluid motor means in said base and underlying said platen, and meansoperatively connecting the fluid motor means to the platen for elevatingthe platen under evenly and equally applied pressure from the motormeans, a plurality of standards extending upwardly from said base andpassing through said platen, and an auxiliary platen overlying saidfirst-mentioned platen in spaced relation thereto, said auxiliary platenbeing carried by upper portions of said standards.

4. A fitting press comprising base means, guide means mounted on thebase means, platen means guidingly mounted by the guide means above thebase means, fluid motor means mounted in the base means engageable withthe platen means for imparting movement thereto with respect to the basemeans and the guide means and constrained by the guide means, pressuresupply means for applying equally distributed fluid pressure to thefluid motor means, connecting means operatively connecting the fluidmotor means to the platen means for movement of the platen means underevenly and equally distributed pressure, said fluid motor meansincluding a plurality of pistons vertically displaceable by equalpressure simultaneously applied thereto by the pressure supply means,each of said pistons being separately connected by the connecting meansto the platen means, horizontal adjustment means mounted on the guidemeans, slotted joint means oper-atively connecting the adjustment meansto the platen means for adjustment movement of the platen means relativeto the guide means and the connecting means in which it is mounted andengaged respectively.

5. The combination of claim 3, wherein said standards passing throughsaid platen have enlarged heads preventing upward movement of saidauxiliary platen, and clips engaged over said enlarged heads holdingsaid auxiliary platen in place.

References Cited in the file of this patent UNITED STATES PATENTS420,986 Bretsoh Feb. 11, 1890 503,963 Higgins Aug. 29, 1893 847,526Taylor Mar. 19, 1907 1,056,396 Birkett Mar. 18, 1913 2,059,344Hardenbrook Nov. 3, 1936 2,224,070 Walter Dec. 3, 1940 2,300,339Carnerota Oct. 27, 1942 2,364,834 Whistler Dec. 12, 1944 2,415,766Shapiro Feb. 11, 1947 2,565,639 Waldie Aug. 28, 1951 2,593,144 HercikApr. 15, 1952 2,611,434 Mugler Sept. 23, 1952 2,808,108 Pellegrino Oct.1, 1957 2,821,907 Stone Feb. 4, 1958 2,971,262 Muller Feb. 14, 1961FOREIGN PATENTS 670,955 France Ian. 28, 1930 995,632 France Oct. 22,1951

1. A FITTING PRESS COMPRISING A BASE, GUIDES ON THE UPPER PORTION OFSAID BASE, A PLATEN SEATED BETWEEN SAID GUIDES AND IN OVERLYING RELATIONTO SAID BASE FOR GUIDED VERTICAL AND LONGITUDINAL MOVEMENT WITH RESPECTTO THE BASE AND THE GUIDES, A NICROMETER ADJUSTMENT SCREW CARRIED BYSAID GUIDES, MEANS OPERATIVELY CONNECTING SAID ADJUSTMENT SCREW TO SAIDPLATEN FOR LONGITUDINALLY POSITIONING SAID PLATEN AND ACCOMMODATINGRELATIVE VERTICAL MOVEMENT BETWEEN THE GUIDES AND THE PLATEN, EXTENSIBLEFLUID MOTOR MEANS IN SAID BASE AND UNDERLYING SAID PLATEN, AND MEANSOPERATIVELY CONNECTING THE FLUID MOTOR MEANS TO THE PLATEN FOR ELEVATINGTHE PLATEN UNDER EVENLY AND EQUALLY APPLIED PRESSURE FROM THE MOTORMEANS, SAID FLUID MOTOR MEANS INCLUDING A PISTON ROD, AN INTERLOCKEDCONNECTION BETWEEN SAID PLATEN AND SAID PISTON ROD